/** @file
* SPCR Table
*
* Copyright (c) 2019 Pete Batard <pete@akeo.ie>
* Copyright (c) 2014-2021, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/

#include <IndustryStandard/Acpi.h>
#include <IndustryStandard/Bcm2836.h>
#include <IndustryStandard/SerialPortConsoleRedirectionTable.h>
#include <Library/AcpiLib.h>
#include <Library/PcdLib.h>

#include "AcpiTables.h"

#define RPI_UART_FLOW_CONTROL_NONE           0

#define RPI_UART_INTERFACE_TYPE              EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_BCM2835_UART
#define RPI_UART_BASE_ADDRESS                BCM2836_MINI_UART_BASE_ADDRESS
#define RPI_UART_INTERRUPT                   BCM2836_MINI_UART_INTERRUPT

STATIC EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE Spcr = {
  ACPI_HEADER (
    EFI_ACPI_6_3_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE,
    EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE,
    EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_REVISION
  ),
  // UINT8                                   InterfaceType;
  RPI_UART_INTERFACE_TYPE,
  // UINT8                                   Reserved1[3];
  {
    EFI_ACPI_RESERVED_BYTE,
    EFI_ACPI_RESERVED_BYTE,
    EFI_ACPI_RESERVED_BYTE
  },
  // EFI_ACPI_6_3_GENERIC_ADDRESS_STRUCTURE  BaseAddress;
  ARM_GAS32 (RPI_UART_BASE_ADDRESS),
  // UINT8                                   InterruptType;
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERRUPT_TYPE_GIC,
  // UINT8                                   Irq;
  0,                                         // Not used on ARM
  // UINT32                                  GlobalSystemInterrupt;
  RPI_UART_INTERRUPT,
  // UINT8                                   BaudRate;
#if (FixedPcdGet64 (PcdUartDefaultBaudRate) == 9600)
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_BAUD_RATE_9600,
#elif (FixedPcdGet64 (PcdUartDefaultBaudRate) == 19200)
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_BAUD_RATE_19200,
#elif (FixedPcdGet64 (PcdUartDefaultBaudRate) == 57600)
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_BAUD_RATE_57600,
#elif (FixedPcdGet64 (PcdUartDefaultBaudRate) == 115200)
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_BAUD_RATE_115200,
#else
#error Unsupported SPCR Baud Rate
#endif
  // UINT8                                   Parity;
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_PARITY_NO_PARITY,
  // UINT8                                   StopBits;
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_STOP_BITS_1,
  // UINT8                                   FlowControl;
  RPI_UART_FLOW_CONTROL_NONE,
  // UINT8                                   TerminalType;
  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_TERMINAL_TYPE_VT_UTF8,
  // UINT8                                   Reserved2;
  EFI_ACPI_RESERVED_BYTE,
  // UINT16                                  PciDeviceId;
  0xFFFF,
  // UINT16                                  PciVendorId;
  0xFFFF,
  // UINT8                                   PciBusNumber;
  0x00,
  // UINT8                                   PciDeviceNumber;
  0x00,
  // UINT8                                   PciFunctionNumber;
  0x00,
  // UINT32                                  PciFlags;
  0x00000000,
  // UINT8                                   PciSegment;
  0x00,
  // UINT32                                  Reserved3;
  EFI_ACPI_RESERVED_DWORD
};

//
// Reference the table being generated to prevent the optimizer from removing the
// data structure from the executable
//
VOID* CONST ReferenceAcpiTable = &Spcr;